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Diffstat (limited to 'Documentation/uml/UserModeLinux-HOWTO.txt')
| -rw-r--r-- | Documentation/uml/UserModeLinux-HOWTO.txt | 54 |
1 files changed, 2 insertions, 52 deletions
diff --git a/Documentation/uml/UserModeLinux-HOWTO.txt b/Documentation/uml/UserModeLinux-HOWTO.txt index 544430e3998..b7390000bf2 100644 --- a/Documentation/uml/UserModeLinux-HOWTO.txt +++ b/Documentation/uml/UserModeLinux-HOWTO.txt @@ -157,7 +157,7 @@ 13. What to do when UML doesn't work 13.1 Strange compilation errors when you build from source - 13.2 UML hangs on boot after mounting devfs + 13.2 (obsolete) 13.3 A variety of panics and hangs with /tmp on a reiserfs filesystem 13.4 The compile fails with errors about conflicting types for 'open', 'dup', and 'waitpid' 13.5 UML doesn't work when /tmp is an NFS filesystem @@ -379,31 +379,6 @@ bug fixes and enhancements that have gone into subsequent releases. - If you build your own kernel, and want to boot it from one of the - filesystems distributed from this site, then, in nearly all cases, - devfs must be compiled into the kernel and mounted at boot time. The - exception is the SuSE filesystem. For this, devfs must either not be - in the kernel at all, or "devfs=nomount" must be on the kernel command - line. Any disagreement between the kernel and the filesystem being - booted about whether devfs is being used will result in the boot - getting no further than single-user mode. - - - If you don't want to use devfs, you can remove the need for it from a - filesystem by copying /dev from someplace, making a bunch of /dev/ubd - devices: - - - UML# for i in 0 1 2 3 4 5 6 7; do mknod ubd$i b 98 $i; done - - - - - and changing /etc/fstab and /etc/inittab to refer to the non-devfs - devices. - - - 22..22.. CCoommppiilliinngg aanndd iinnssttaalllliinngg kkeerrnneell mmoodduulleess UML modules are built in the same way as the native kernel (with the @@ -839,9 +814,7 @@ +o None - device=none - This causes the device to disappear. If you are using devfs, the - device will not appear in /dev. If not, then attempts to open it - will return -ENODEV. + This causes the device to disappear. @@ -3898,29 +3871,6 @@ - 1133..22.. UUMMLL hhaannggss oonn bboooott aafftteerr mmoouunnttiinngg ddeevvffss - - The boot looks like this: - - - VFS: Mounted root (ext2 filesystem) readonly. - Mounted devfs on /dev - - - - - You're probably running a recent distribution on an old machine. I - saw this with the RH7.1 filesystem running on a Pentium. The shared - library loader, ld.so, was executing an instruction (cmove) which the - Pentium didn't support. That instruction was apparently added later. - If you run UML under the debugger, you'll see the hang caused by one - instruction causing an infinite SIGILL stream. - - - The fix is to boot UML on an older filesystem. - - - 1133..33.. AA vvaarriieettyy ooff ppaanniiccss aanndd hhaannggss wwiitthh //ttmmpp oonn aa rreeiisseerrffss ffiilleessyyss-- tteemm |